don't buy to many filament spools ! They are not trivial to store and preserve. I known it's exciting to get all of the nice colors. It's better to start with one spool of PLA and finish it before you open the next one. Myself I opened this year a spool I bought when I got started in 2018.
add a filament dust filter to clean the filament of any dust and debris before it enters the printer. It can be as simple as a piece of paper towel holded around the filament with a clip. This will save you the headache that comes with a clogged nozzle.
now days, model sites like Printables and Thangs are full of AI slop. Do not even bother to download a model that doesn't have a real photo of the real printed part. If the creator didn't bother to actually print his design before publishing, you can be sure it will be a nightmare to print, if not impossible.
lots of very interesting videos on YouTube to learn 3D printing and 3D modeling techniques for 3D printed parts. MakersMuse a d CNC-Kitchen are good channels. You can skip all of the productsl reviews, focus on the teaching videos.
How would I know which bank to go too ? It's comes down to the details of how they implement their phone app. I don't think you would find this information anywhere.
CUM marchandises, when ?